The P3418 code indicates a performance issue in the control circuit for the cylinder 3 intake valve deactivation system.
The solenoid that controls intake valve deactivation for cylinder 3 may have an internal short, open circuit, or wear that prevents proper operation.
Corroded, damaged, or loose wiring and connectors between the PCM and the solenoid can interrupt the signal, causing performance faults.
The mechanical actuator that adjusts the intake valve timing for cylinder 3 may be stuck, worn, or electrically faulty, affecting deactivation performance.
A rare failure of the PCM's driver circuit can cause insufficient voltage or current to the solenoid, leading to a performance code.
A camshaft position sensor or camshaft phasing problem can affect the timing of valve deactivation, triggering the code.
It signals that the engine control module detected abnormal performance in the cylinder 3 intake valve deactivation circuit.
The vehicle may run roughly or lose power, so it is best to address the issue promptly to avoid further engine stress.
No, the PCM is rarely at fault; most often the problem is a faulty solenoid, wiring, or actuator.
Usually not; the issue is limited to the solenoid, its wiring, or the associated actuator, not the whole manifold.